On paper, the South Americans should have little trouble disposing of Iceland, an island nation of 330,000 that is the smallest country to ever reach the finals.

But the Icelanders revel in their underdog status and showed at Euro 2016 they will not be cowed on the big stage.

Messi 'can carry team'

Spurred on by their fans' thunderous “Viking clap”, they earned a 1-1 draw with Cristiano Ronaldo's Portugal then famously dumped out England to reach the quarter-finals.

The 'Viking Clap' will be heard at the 2018 #FIFAWorldCup. Photo: @supperrb via Twitter

“We kept Ronaldo quite quiet so hopefully we can do the same against Messi,” said Burnley winger Johann Berg Gudmundsson. “We know we're probably going to be defending for a lot of the time and obviously he's one of the best players in the world and he can turn it on.”

Iceland, ranked 17 places behind Argentina at 22nd in the world, topped their group in European qualifying with comfortable wins over Croatia, Ukraine and Turkey.

Argentina reserve goalkeeper Nahuel Guzman said the squad would do everything in their power to give Messi the success he craves but they are expecting a tight match against Iceland.

“We must show patience and move the ball around to try and find space, and look to get in behind with speed,” said Guzman, who plays for Mexican club Tigres. “It will be a very tight game in which we'll also have to control our nerves.”

Messi was devastated by Argentina's loss to Germany in the 2014 World Cup final. Photo: @Argentina via Twitter

Argentina only made it to the finals courtesy of a Messi hat-trick in their final qualifier against Ecuador.

Subsequent friendlies have given cause for concern - there was a 4-2 loss to Nigeria in November and a 6-1 humiliation by Spain in March, although Messi did not play in either match.

Argentina's final warm-up against Israel in Jerusalem was cancelled after protests from Palestinians, miring the team in controversy and leaving players short of match practice.

To further compound their problems, goalkeeper Sergio Romero and midfielder Manuel Lanzini both fell victim to late injuries.

Accusing Argentina of over-reliance on Messi may seem unfair to a team boasting the sharp attacking talents of Sergio Aguero, Paulo Dybala and Gonzalo Higuain but it is a view coach Jorge Sampaoli himself has expressed.

“He can carry the team on his shoulders,” Sampaoli said of the player who scored 45 goals in 54 games for Barcelona this season.